Oilless spindle.



L. S. BACHE. 0|LLE\SS SPINDLE. APPLICATION FILED MAR. 6.1914.

Patented Sept. 14, 1915.

WIT/458859 anyone skilled in the LEIGH S. BACHE, 0F BOUNDBROOK, NEWJERSEY, vASSIG-NOIR, TO THE GRAPHITE LUBRICATING NEW JERSEY.

COMPANY, oF' BoUNDBRooK,

NEW JERSEY, AQCORPORTION OF oILLEss SPINDLE.`

Specication of Letters Patent.

Patented. Sept. M, i915.

Application le March 6, 1914. Serial N o. 822,912.`

To all twhom t may concern 4 Be it known that I, LEIGH S. BACHE, acitizen of the United States, and a resident of Boundbrook, in thecounty of Somerset and State of New Jersey, have invented certain newand useful Improvements in Oil# less Spindles, of which the following isa full, clear, and exact description, whereby art may make and use thesame.

rlhe invention relates to oilless spindles and more particularly to thebearing for the spindle blade which said bearin may be adapted andutilized in any form o spindle desired.

The object of the invention is to provide a self-lubrication for thespindle blade due to the inherent qualities of the bearing upon andwithin which the blade runs, no oil bath being required.

A further object is to provide for lubrication of the blade due to theheat generated by the spindle within the spindle bearing and to providein conjunction therewith an adjustment for the heat generating member ofthe spindle bearing.

Referring to the drawings: Figure l is a View in side elevation of aspindle of wellknown type. Fig. 2 is a vertical sectional view throughthe spindle, cup, whirl, bolster and step bearing on enlarged scale.`Fig. 3

l`is a similar sectional view showing the bolster and step in one piece.Fig. 4 is a detail sectional view illustrating a modified formofadjustment for the heat generating p Tghere is illustrated herein awell-known and ordinary type of spindle embodying a Whirl, spindleblade, bolster and step bearing andy cup inclosing'the bolster and stepbearing. In such devices, ordinarily, the cup serves as an oil cup andserves as a holder for a lubricating bath in which `all of the severalparts are immersed.

It has not been unusual to provide bolsters and steps of various types'including metal, fibrous packings and wicking combined with metals butwith any of the types of bearings known an oil bath has been provided inthe oil cup for maintaining proper lubrication of the parts to keep thespindle bearings cool.

The principal object of the present invention is to obviate thenecessity of liquid lubricants and to provide for anl adjustment oftheparts of the self-lubricating bearing l formed of fibrous materialcompletely and thoroughly impregnated with fatty acids, waxes andmineral and vegetable oils.

The bearing formed from the material hereinafter described, gives aperfect and complete lubrication to the spindle and this 1s eEected byproviding for a combined metallic and fibrous step either separate fromor combined with the bolster and made ad` justable so that there is nopossibility of the blade.l cutting into the lower end of the bolster orstep to such` an extent as to cause unduev friction of the blade withinthe bolster bearing. To this end, the lower end of the bolster or stepis provided with a metallic plug upon which the end of the spindle restsand owing to the friction, under rapid rotation, just sufficient heat isdeveloped to withdraw a thin film of lubricant from the bolster whichwill be adequate for lubricatingsurfaces and yet will not flood. Topreclude the possibility of the spindle settling the metallic plug ismade adjustable and therefore there is no possibility of the spindlesettling into the bolster produce undue friction and heating.

, Referring to the drawings, the numeral 1 denotes `the spindle bladewhich is provided with the usual whirl 2 which encircles thev of thebolster as illustrated in Fig. 3 or in a step bearing 8 as illustratedin Fig. 2. This metallic plug is preferably of very hard steel andregisters with the end of the spindle. It extends an appreciable-distance into the fiber surrounding it and may be of any desired lengthdepending upon the depth of the step bearing or depth of the fibrousbearing extending belowv the bolster. v The hardened plug wouldordinarily be suiiicient to prevent wear and. also to prevent thebeveled sides of the spindle blade portion 5 from settling into thebolster. It has been found, however, that for the best results, acompensation must be effected for dependmg upon thev to thereby any wearwhatsoever in order to secure the longest life for the parts and toprovide for this, without detracting from the proper generation of heat,to withdraw the lubricant from the fiber, an adjusting device isprovided for raising the metallic plug 9, as any Wear is occasionedeither upon the end of the plug or the end of the spindle.

Both the bolster and step portions of the bearing are impregnated with alubricant which has a high melting point far in eX- cess of the ordinaryheat developed by the spindle running under proper lubricatedconditions. The lubrication of the parts is perfect so long as thespindle is maintained in predetermined bearing position and' thereforeto take up any Wear, the adjusting device serves to lift the plug 9 andpermits utilization of the fibrous bolster andV step for a maximumperiod of time. The lubricant 4does not eXude from the bearingsufficiently to bey dissipated but simply forms a film which 'gives theproper lubrication for the bearing when the right amount of heat isgenerated. As the spindle, due to its contact with the metallic plug,generates just sufficient heat to draw the film of lubricant from theimpregnated fiber, the bearing runs cool and there is therefore nofurther exuding of the lubricant from the bearing with the result thatthere is no overheating in view of the perfect lubrication; Furthermore,there can be no throwing lof oil and the bolster and step may be renewedand adjusted without soiling the spindle frame or goods in course ofmanufacture. A particular feature of the present invention is to providefor the adjustment of the heat generating plug 9 and this isconveniently effected through the medium of ascrew 10 extending upthrough the bottom of the oil cup and through the fibrous bearing 8 asillustrated in Figs. 2 and 3 or through a conically pointed screw 11introduced through the side of the oil cup and with its point projectingjust under the lower edge of the plug 9.

It is preferred to so arrange the screw 10 that there will be noliability of conducting heat from the heat generating plug 9 to thelarger body of metal of the oil cup and this may be effected by using anadjusting screw of fibrous material of a nonconducting nature orpreferably by inserting between the upper end 12 of the adjusting screwand the lower end 13 ofthe plug 9, a pellet of insulation 14. This maybe of porcelain, glass or anyv good non-conductor of heat and servesmerely to prevent serves not only to raise the heat generating plug butprevents dislodgment and movement of the fibrous bearing part 18.

Obviously, the exact detail of adjusting device may be varied to aconsiderable extent without departing from lthe spirit or intent of theinvention ,which contemplates the ready adjustment of the heatgenerating plug to compensate for any and all wear which may bedeveloped between the plugand the spindle. v

What I claim as my invention and desire to, secure by Letters Patent is:

1.'A. spindle bearing embodying a bolster and step formed of fibrousmaterial impregnated with a lubricant. and having a metallic plugembedded in the fibrous material and with its end in contact with theend of the spindle whereby said spindle and plug generates sufficientheat to withdraw lubricant from the fibrous bearing, and a heatinsulated adjusting device for moving said plug.

2. A spindle bearing embodying aV bolster and step formed of fibrousmaterial impregnated with a lubricant and having a metallic plugembedded in the fibrous material and 'with its end in contact with theend of the spindle whereby said spindle and plug generate sufficientheat to withdraw lubricant from the fibrous bearing, and a heatinsulating adjusting device 'for moving said plug with reference to thefibrous bearing and spindle blade.

LEIGH S. BACI-IE. Witnesses: f

S. A. KING, C. L. WRENCH.

